Netty Memory

This section describes the types, names, and meanings of Netty memory metrics collected by APM.

Table 1 Netty memory metrics

Category

Metric

Name

Description

Unit

Data Type

Default Aggregation Mode

Memory (memory: memory metrics)

directMemoryUsage

directMemoryUsage

Used direct memory

-

INT

AVG

maxDirectMemory

maxDirectMemory

Maximum direct memory

-

INT

MAX

Exception (exception)

causeType

causeType

Class

-

ENUM

LAST

exceptionType

exceptionType

Exception type

-

ENUM

LAST

count

count

Count

-

INT

SUM

message

message

Exception message

-

STRING

LAST

stackTrace

stackTrace

Exception stack

-

CLOB

LAST